Stop motion for gill boxes



March 7, 1933. W, 1 SCOTT 1,900,400

STOP MOTION FOR GILL BOXES Filed May 29, 1930 inwmiammgll,

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Patented Mar. 7, 1933 UNITED STATES PATENT OFFICE y WALTER J. SCOTT, OF WOONSOCKET, RHODE ISLAND sTor MOTION FOR GrLL BOXES Application :filed May 29,' 1930. Serial No. 458,291.

The present invention relates to stop moa tions for textile machinery; and has partic- `ular reference Vto an electrically operated stop device applied to drawing'frames and the the like. v One object of this invention is to provide a feeler memberwhich will operate to stop the machine when the traveling sliver becomes abnormally' thickened.

Another object of the invention is to so i mount a stop motion on the machine that the feeler member thereof will extend into proxw imity with the traveling sliver so that a slug or imperfection in the sliver or undue enlargement thereof will operate this stop motion to close an electric circuit and stop the machine. f y

A further object of the invention is to provide a guide bar over which the sliver is drawn and tomounta plurality of flexible fingers so that their free ends will 'be spaced a predetermined distance from this guide bar and to also provide a contact bar adjacent these feeler fingers whereby a slug inthe sliver or other abnormal thickening of the sliver in traveling over the guide bar will engage the finger to be moved against` the contact bar to complete the electric circuit and stop the machine.

With these and other objects in view, the

Y invention consists of certain novel features of construction7 as will be more fully described, and particularly pointed out in the appended claims.

In the drawing:

Fig. l is a side elevation partly in section illustrating the traveling sliver as passing thru my improved stop mechanism on its way from thedraft rolls to the winding spool. a Y a Fig. 2 is a. front view showing two sets of feeler lingers as mounted adjacent their common contact bar and their common guiding cross bar with' the slivers in section as passing underthe fingers.

Fig. 3 is an enlarged view of one of the sets of fingers mounted on that portion of the relative to the sliver guiding cross bar.V

Fig. 4 is an enlargedl section on linefl--Ll of Fig. 3,showing the travel of the sliver over'the guiding bar and beneath the delicately poised feeler fingers which arespaced a from their contact bar.A i 55 Fig. 5 is a section onV line5-5 of Fig. v3, showing the construction of thatl portion of the frame whereby the feeler vlinger-.mayy be adjusted towards and from the contact bar.

Fig. 6 is a detail showing a pair of feeler -60 lingers as formed from a single piece of thin sheet stock with the electrical 'contact but- Y tons positioned at their free ends.

Fig. 7 is a diagrammatic view of the electrically controlled mechanism showing the '55 solenoid which is'operated when the feeler 'finger is moved into engagementwith its contact bar to complete an electric circuit and loperated by any abnormal thickness'in the traveling sliver to stop the machine, the attendantthen removes thek imperfection and so starts themachine again. This stop device comprises essentially a plurality of delicatevly poised flexible fingers which are set with their free ends spaced a predetermined distance from the guide bar over which the 5 sliver travels so that any abnormal thickening ofthe sliver, either from slugs or other imperfections, will cause this thickened portion to engage the free ends' of these-feeler 90 fingers and move the same into vengagement with the contact bar to close an electric circuit and stop the machine; andthe following is a detailed description of thepresent embodiment of my invention and showing 95 one arrangement of mechanism by `which these advantageous results'may be accomplished.:- With reference to the drawing, 10 designates the rotating spindle which carries the .100 winding spool 1l on which the treated sliver 12 is wound by the flyer 13, after this sliver has passed thru the two sets of draft rolls 14 and 15. At times this sliver becomes thickened for various reasons and in some instances imperfections such as slugs and the like are lodged in the sliver, which imperfections it is desired to correct or remove before thesliver leaves this machine; and to accomplish this in a simple and effective way, I have provided an electric circuit in which I have mounted a stop motion, the same comprising essentially an elongated sliver guide bar 16 which is located between the draft rolls and the spindle over which bar the sliver is run. Y

`Onthis bar I have mounted a `frame inem- Aber 17 which is provided with downwardly .extending legs 18 slotted as'at 19 thruwhich the same is secured to the bar 16 by means of bolts 2O and by which construction this frame may be adjusted vertically relative to vthis bar 16. I Y i On this guide bar V16, I have mounted an auxiliary frame 21 which comprises a pair of'endstandards 22 Aconnected by a pair of spaced cross bars 28-'betweengwhich is mount- 4eda very thin finger plateA 24 split as'at 25 to render the fingers moreilexilole. yAlso, I have -mounted a. contact bar 26 which-issupported fat its .ends from the frames `17 by bolts 27, which contactbar is .provided'with acontact strip 28 of carbon or the like, seeiFig. 4.

. These feeler`fingers124 ywhichrare mounted .in`this auxiliary frame: 21. are .arranged to extend downwardly from ztheir Y attached upperedges and are provided with contact `buttons 30 of silver, platinum or the like positioned, sothat .they will come opposite this carbon strip 28 and the space between .this bar128 and thesebuttonsBO maybe regulated by adjusting'the nuts l31 on the 4bolt y27, whereby the whole :auxiliary frame21 may .be moved towards or from the cross bar 26.

In this auxiliary frame,.I have'alsot mounted a backing bar V32 against which these delicate feeler ngers 24 normallyrest.

I-In the operation of themachine the sliver 12;passes from-the: draft rolls up Vover the guide `bar 16-and solong as itlruns of anormal'thicknessit is clear of the :feelerfingers `24,fbut if for anyreasonthe sliver becomes abnormally thickened or a-slug or'other imperfection becomes lodged `in thesliver this abnormally thickened portion will engage .the free-end of .one or more of the feeler fingers and move them yforwardly vso that their-contactbuttons 30 will come intoengagement with the contact strip 28'fto close theelectric circuit andstop themachine.

,Any suitable mechanism may be employed in the stopping of the machine, but lI have herein shown onemetliod of performing this function which is-that of axtight -pulley34 andA a'loosejpulley 35, a belt-'engaging .fork

36 which is mounted on the shift rod 37 which may be moved endwise to shift the belt from one pulley to another. I have also provided a lever 38 which is pivoted at 39 at its lower end, its upper end being in engagement with the collar 4() on this shift rod. This lever is provided with a latch 41 which Aengages a finger 42 in the solenoid 43 lwhereby when the feeler linger 24 is engaged by an enlargement in the traveling sliver, it is moved into engagement with the-contact strip 28 to close the circuit thru the wires 44 and 45 to energize the solenoid 43 to move and release the K latch 41 permitting the lever 38 under action of its tension spring 46 to move the shift rod y37 and shift the belt from the tight tothe loosepulley to stop the-machine.

Myimpioved stop mechanism is verysiinple and inexpensive in construction and is eective in its operation as the ydelicately poisedfingers which are -supportedin Aproximity to the upper surface of tlietraveling sliver will be engaged by-anabnormal thickness, imperfection or slug in the'slivertofbe moved into Vengagement with the contact @o member in the electric circuit, which will serve to energize jthe electricfdevice to stop the machine.

The foregoing description is directedsolely privilege of resorting to all the mechanical changes'to which the device issusceptible, the

said stop mechanism including a'plurality of flexible feeler membersrigidly secured at one end with their free ends independently .movabe and extending to a position adjacent the n traveling sliver, a contact member normally yspaced'from said feeler members, `whereby an Yabnormally thickened portion 1n the'sliver will engage and movetlie free'endof one-of said feeler member into engagement with said M .towards ,the construction illustrated, but '1:35 `desire it to vbe understood that Ifreserve the ytermediate said rolls and receiving means.'Em

contact member to completeanelectric circuit "im yand stop' the machine.

2. In a gill box, draft rolls acting upon the sliver as fed therethrough, means forreceiving the treated sliver, stop mechanismrinn termediate said rolls and receiving means, '120 Asaidstop'mechanism including a plurality of ,flexible feeler members rigidly secured at one end with their free ends independently movable and extending to a position adjacent. the traveling sliver, a Contact member normally@ spaced from said feeler membersrwhereby an abnormally thickened portion inthe sliver will .engage and move the free end of one of said lingers into engagement with said contact membertovcomplete. an electric circuitandmo stop the machine, and means whereby the working position of said feeler members may be adjusted toward and from said contact member.

3. In a gill box, draft rolls acting upon the sliver as fed therethrough, means for receiving the treated sliver, stop mechanism intermediate said rolls and receiving means, said stop mechanism including a guide bar over which the sliver is led, a plurality of flexible lingers rigidly secured at one end with their free ends extending adjacent said guide bar, a contact member normally spaced from said feeler member, whereby the thickening of the traveling sliver as it passes over said guide bar will engage and move the free ends of said lingers tocomplete an electric circuit and stop the machine.

4:. In a gill box, draft rolls acting upon the sliver as fed therethrough, mea-ns for receiving the treated sliver, stop mechanism intermediate said rolls and receiving means, said stop mechanism including a guide bar over which the sliver is led, a plurality of flexible lingers rigidly secured at one end with their free ends extending adjacent said guide bar, a contact member normally spaced from said feeler member, whereby the thickening of the traveling` sliver as it passes over said guide bar will engage and move the free ends of said fingers to complete an electric circuit and stop the machine, and adjustable means for regulating the working distance between the free ends of said feeler lingers and the sliver guiding edge of said guide bar.

5'. In a gill box, sliver draft rolls acting upon the sliver as led therethrough, means for receiving the treated sliver, stop mechanism intermediate said rolls and receiving means including a frame, flexible lingers rigidly secured at one end on said frame, an electrical contact bar, a sliver guide bar, the free ends of said fingers being positioned adjacent said electrical contact bar, and said sliver guide bar and normally spaced from both, whereby an abnormal thickness in the traveling sliver over said guide bar will engage and bend said fingers into engagement with said contact bar to complete an velectrical circuit thru said bar and stop the machine, means for adjusting portions of said frame to position the working .edges of said fingers relative to said sliver guide bar, and means for adjusting other portions ofv said frame to position said finger edges relative to said contact bar.

. 6. In a drafting machine, a stop mechanism including a plurality of llexible feeler members rigidly supported at one end with their free kends independently movable, a contact member normally spaced from said l'eeler members but positioned to be engaged bythe passage o f an abnormal enlargement in the yarn during this normal continuous travel of the work to move the free en cls nl: Hm {pp-1m members into engagement with said contact member, and an electric' circuit connected to said contact member and lt'eeler members.

7.'In a drafting machine, a guide over which the yarn travels, a stop mechanism Vincluding a plurality of flexible feeler members rigidly supported at one end with their free ends independently movable and spaced 

